Abstracts Book - IMRC 2018

• SE1-P005
STUDY OF THE PROCESS PARAMETERS IN THE HIGH PRESSURE
DIE CASTING (HPDC) ON MICROSTRUCTURE OF ALUMINIUM
ALLOYS
Erika Tatiana Badillo Campos 1
1 Universidad Autónoma de Nuevo León, Facultad de Ingeniera Mecánica y eléctrica, Mexico.
The transportation industry, and in particular the automotive industry, is
imposed to seek light materials in the development of robust parts. The global
production of aluminium and magnesium alloys has therefore increased, and
the consumption of aluminium concurrently exceeds the existing production
capacity of primary metal. It is therefore necessary to exploit, or invent,
economically sustainable processes that can give light weight products with
integrated functions that fulfill the requirements for recycling and fuel
consumption regulations. High pressure die casting (HPDC) is a method well
suited for those demand.
High-pressure die-cast (HPDC) components are being increasingly used due to
good flexibility and high productivity. These aspects make HPDC suitable to
produce several mass components, especially for the automotive sector. Due to
the rapid filling of the die and high cooling rate, the process generally leads to
the formation of a wide variety of defects, such as porosity and oxide films.
The effect of application of 400-1000 bar pressure during solidification on the
cooling rate, soundness, pore characteristics and mechanical properties of
aluminum castings was investigated in the current research. Wedge castings of
A380 and A413 alloys were made using HPDC processes for this study.
Pressure did not change the cooling rate significantly in A380 and A413 castings.
The volume percent porosity decreased in all these alloys with pressure and the
decrease in porosity was a function of alloy and cooling rate. Castings solidified
under pressure exhibited a smaller mean diameter and mean porosity
thickness.
Acknowledgment:
I would like to thank Dr. Arturo Juarez, for his help and guidance in successful
completion of this study. Thanks to Dr Marco Hernandez for his suggestions and